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Pilihan Topik Matematika - at ee-cafe.org

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1π<br />

y<br />

0,5π<br />

0<br />

x<br />

-10 -5 0 5 10<br />

Gb.6.11. Kurva<br />

y<br />

= cot −1<br />

x<br />

Pertukaran posisi sumbu-x dan sumbu-y Gb.6.11. ini akan memberikan<br />

bentuk kurva fungsi cotangent pada Gb.6.6.<br />

Fungsi Secan Inversi. Selanjutnya kita memperoleh fungsi secan inversi<br />

1<br />

y = sec<br />

−1 x = cos<br />

−1<br />

(6.19)<br />

x<br />

dengan nilai utama<br />

π<br />

≤<br />

− 1<br />

0 sec x ≤ π .<br />

0,75π<br />

0,5π<br />

0,25<br />

π<br />

0<br />

-4 -3 -2 -1 0 1 2 3 4<br />

Gb.6.12. Kurva<br />

y<br />

= sec −1<br />

x<br />

Fungsi Cosecan Inversi.<br />

1<br />

csc<br />

−1 x = sin<br />

−1<br />

(6.20)<br />

x<br />

dengan nilai utama<br />

π −1 π<br />

− ≤ csc x ≤<br />

2 2<br />

82<br />

Sudary<strong>at</strong>no Sudirham, “<strong>Pilihan</strong> <strong>Topik</strong> <strong>M<strong>at</strong>em<strong>at</strong>ika</strong>”

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